Effect of gamma irradiation combined with hot water dip and transportation from Thailand to Canada on biochemical and physical characteristics of Thai mangoes (Nahng Glahng Wahn variety)

✍ Scribed by M. Gagnon; M. Lacroix; V. Pringsulaka; B. Latreille; M. Jobin; K. Nouchpramool; Y. Prachasitthisak; S. Charoen; P. Adulyatham; J. Lettre; B. Grad

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 375 KB
• Volume: 42
• Category: Article
• ISSN: 0969-806X
• DOI: 10.1016/0969-806x(93)90250-x

✦ Synopsis

Two lots of mangoes of the Nahng Glahng Wahn variety from Thailand were irradiated at the Thai Irradiation Center (TIC) at 0.49 to 0.77 kGy. Following this, one batch was retained in Thailand (TIC) while the other was shipped to the Canadian Irradiation Center (CIC) for investigation of the same variables during storage.

This way, it was hoped to compare the effects of gamma radiation with hot water dip (HWI) or without (I) before and after transportation, on the respiratory activity, rotting, texture, ph, titratable acidity and on the total soluble solids in mangoes.

Irradiation stimulated carbon-dioxide (CO*) production early in the stuhy but delayed ethylene (C2H4) production which peaked later. at CIC than at TIC.

The production of CO2 and C2Hq occurred later

The I and particularly HWI treatments also delayed the rotting of the mangoes.

The texture of the mangoes declined earlier and more rapidly during storage in Thailand than in Canada.

The irradiated samples developped a softer texture early during storage and the rise in pH was less marked than the controls.

The control showed lower values of total soluble solids during the first 10 days of storage but increased later.